I'm thinking of upgrading to Lion after hearing that they've upgraded Terminal.app somewhat. The main thing I've heard is that Terminal.app now supports 256 colors, but I don't care about colors. I want mouse events in screen without using MouseTerm.

Where can I find all the changes to Terminal.app provided by Lion? Are mouse events included in this update?

I don't use mouse events, but they appear to at least partially work in iTerm 2, which does not require Lion or MouseTerm. I tested with "set mouse=a" in vim and was able to select using the mouse, etc.